A former NATO commander wants to reduce the alliance's active conventional forces by 50 percent, with the Warsaw Pact cutting its strength to the same number of troops. Calling NATO's current proposal only a starting point for negotiations, retired Army Gen. Andrew J. Goodpaster told the Senate Armed Services Committee on Thursday his plan amounts to a "radical restructuring" on both sides. The current NATO proposal calls for a 5 percent to 10 percent cut in battle tanks, heavy artillery and armored troop carriers. The offer came in response to Soviet leader Mikhail Gorbachev's proposal last December to cut the Red Army by 10 percent with a reduction of 5,000 tanks and 50,000 troops in Eastern Europe. "I do not think the interests of the West would be served if that's as far as we went," said Goodpaster.